3M1277E4D5A
View detailed technical data, stock status, and sourcing information for: 3M1277E4D5A
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An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see bolt, shear. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see bolt, machine.
0.722 inches minimum and 0.752 inches maximum fastener length, 3a thread class, fillister countersunk head style, 0.410 inches minimum and 0.440 inches maximum thread length, right-hand thread direction
Product Characteristics
Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.
- Thread Class
- 3a
- Thread Direction
- right-hand
- Thread Length
- 0.410 inches minimum and 0.440 inches maximum
- Fastener Length
- 0.722 inches minimum and 0.752 inches maximum
- Head Style
- fillister countersunk
- Head Diameter
- 0.265 inches minimum and 0.272 inches maximum
- Head Height
- 0.057 inches nominal
- Grip Diameter
- 0.2646 inches minimum and 0.2651 inches maximum
- End Item Identification
- f/a-18 aircraft
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 0.302 inches minimum and 0.322 inches maximum
- Thread Quantity Per Inch
- 28
- Countersink Angle
- 99.0 degrees minimum and 101.0 degrees maximum
- Criticality Code Justification
- agav
- Part Name Assigned By Controlling Agency
- bolt,100 deg reduced head,gear drive recess,inconel 718 (125 ksi shear),0.0156 inch oversize
- Special Features
- internal drive recess per nas 1800
- Material
- nickel alloy 718 overall
- Material Document And Classification
- ams 5662 assn std single material response overall
- Surface Treatment
- passivate overall
- Surface Treatment Document And Classification
- mil-l-87132,ty 1,gr b mil spec single treatment response overall
- Supplementary Features
- 0.076 inch dia cotter pin hole at the tip of the bolt 0.106 inch from the end
- Thread Series Designator
- unjf
Related Parts
This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:
| Part Number | Name |
|---|---|
| 11861E4D5A | Close Tolerance Bolt |
| 3M1277E4D5A | Close Tolerance Bolt |
| TX1027E4D5XA | Close Tolerance Bolt |
| WC1277E4D5A | Close Tolerance Bolt |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5306-01-536-4433?
Does the NSN 5306-01-536-4433 have a Schedule B code assigned?
Does NSN 5306-01-536-4433 require demilitarization?
Does NSN 5306-01-536-4433 contain precious materials?
Does NSN 5306-01-536-4433 contain hazardous materials?
When the NSN 5306-01-536-4433 was assigned to the Federal Catalog?
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